Valve-actuating mechanism.



0. M. NACKER.

VALVE ACTUATING MECHANISM.

APPLICATION FILED JUNE 19. I916.-

1,222,194. Patented Apr. 10,1917.

amwmtoz Orvenv M/Yaek/er UNITED STATES. PATENT OFFICE.

ownn m. rmcxna, or nnrnorr, MICHIGAN, assmnon or wens r ammson 2.

races, or :omnorr, MICHIGAN.

VALVE-ACTUATING MECHANISM.

Specification 01 Letters Patent.

Patented Apr. 10, 1917.

To all whom it may concern: I Be it known that I, OWEN M. Naem, a citizen of the United States of Amer ca, re-

and ate of Michi an, have invented certain new and useful provements in Valve- Actu'ating Mechanism, ofwhich the follow} ing is" a specification, reference being had therein to the accompanying drawings. v The invention relates to valve-actuating mechanism for explosion engines and of-that tgpe in which the cam-sha is arranged in t e crank case of the engine and actuates valve rods extending outward from said case. With such constructions .the diameter of the rod is less than is required for a proper bearing for the cam on the end thereof, and co'nsequentl it is usual to provide an enlarged head. his uires a provision in the crankcase for the introduction of the head of the rod, as well as a bearing for the rod in which it is free to slide. There is also a tendency for the lubricant which is splashed by the cranks-uponthe cam and rod to creep upward between the rod and its bearing and thus to work out of the case. To obtain a simplified mechanism and to avoid the objection just-described I have devised struction:

In the drawings: Figure 1 .is a vertical section throu h a portion of the crank case in the plane 0 the valve rod, and showing my improved construction; and 4 Fig. 2 is a horizontal section on line M )f Fig. 1. a A 1s the crank case, B is the cam and C s the val've-rod to be actuated thereby, The tperture in the crank-case through which he rod C asses, instead of being of correponding iameter, is of an enlarged cylina lrical bore, and. in this bore is placed a upsha ed member D slidably engaging the ame. The lower end or bottom of this cup of s-ufiicient width to form a proper bearig for the cam, and just above the bottom ne or more drain apertures D are formed 1 the side wall of the cup, these apertures aing exposed below the bore in the crank- LS6 in the depressed position of the cu he rod 0 is guided in a bearing E which 1s armed upon a 'cap member F seated in a siding at Detroit, in the county of Wayne the following con counter-bore or concentric recess G in the crank-case, the bearing E extending downward within the cup.

With the construction as described the rotation-of the cam will impart a reciprocatory movement to the cup member D, which in turn will actuate the vvalve rod C, restingon the bcttom thereof. Any lubricant which may Work up between the walls of the cup and the bore in the crank-case will be stopped from further movement by the cap G and will drain down into the cup, from which it is discharged through the apertures D in the depressed osition of the cup. The stem 0 is protected by the imperforate bottom of the cup from the direct splash of the lu'iricant, and will be supp led from the cup with sufiicient amount for His own lubrication. The cover or cap F may be secured in position by any suitable means (not shown).

What I claim as m 1. In an engine,

invention is:-- e combination with a .casingtand a cam therein, of a valve rod ac tuate by said cam passing through an enla eged bore in said casing, a cup member s11 ably engagin 7 said bore and having its bottomportion arming an enlar ed bearmgl for the cam and a seat for sai rod, and a etachablev cap tor the up er end of said bore constituting a bearing ibr said rod. In an engine, the combination with a casmg, of a cam therein, a valve rod actuated y said cam, extending through an enlaeged bore in said casing, atcup member s11 ably engaging-said bore and the bottom forming an enlarged bearing for the cam, said rod projectifigdownward within said cu and resting centrally upon said bottom, a etachable cap for closing the u per end of said bore, and abearing for said rod integral with said cap and projecting downward within said cup. 4

3 In an engine, the combination with a casin of a cam therein, a valve rod actu y said .cam passing through an enlarged cylindrical bore in said casing a cup member hayin :ylindrical walls s idubly engaging said and the bottom forming an enlarged bearinghfor said cam, said cup provided wit a drain aperture exbeneath said bore in the depressed position of the cup, and a cap for said bore having :1 depending portion within said cup shaft, said cup having a laterally-openixw forming a bearing for said rod.

4. In an engine, the combination with a casing and a cam-shaft therein, of a valve actuating member in the form of a cup siidzibly engaging an aperture in said casing and operatively engaging said camdrain aperture uncovered in its downwar position of adjustment and sealed by said 10 casing in its upward position of adjustment.

In testimony whereof I afiix my signature.

OWEN M. NACKER. 

